Proposed fix for #103. Apparently the state tokens BLEND_COLOR and BLEND_EQUATION weren't included in the GL 1.4 core interfaces, although the corresponding entry points were promoted from ARB_imaging to core.

diff --git a/api/GL/glcorearb.h b/api/GL/glcorearb.h
index f5d9642..a78bbb6 100755
--- a/api/GL/glcorearb.h
+++ b/api/GL/glcorearb.h

@@ -578,15 +578,17 @@
 #define GL_TEXTURE_DEPTH_SIZE             0x884A
 #define GL_TEXTURE_COMPARE_MODE           0x884C
 #define GL_TEXTURE_COMPARE_FUNC           0x884D
-#define GL_FUNC_ADD                       0x8006
-#define GL_FUNC_SUBTRACT                  0x800A
-#define GL_FUNC_REVERSE_SUBTRACT          0x800B
-#define GL_MIN                            0x8007
-#define GL_MAX                            0x8008
+#define GL_BLEND_COLOR                    0x8005
+#define GL_BLEND_EQUATION                 0x8009
 #define GL_CONSTANT_COLOR                 0x8001
 #define GL_ONE_MINUS_CONSTANT_COLOR       0x8002
 #define GL_CONSTANT_ALPHA                 0x8003
 #define GL_ONE_MINUS_CONSTANT_ALPHA       0x8004
+#define GL_FUNC_ADD                       0x8006
+#define GL_FUNC_REVERSE_SUBTRACT          0x800B
+#define GL_FUNC_SUBTRACT                  0x800A
+#define GL_MIN                            0x8007
+#define GL_MAX                            0x8008
 typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
 typedef void (APIENTRYP PFNGLMULTIDRAWARRAYSPROC) (GLenum mode, const GLint *first, const GLsizei *count, GLsizei drawcount);
 typedef void (APIENTRYP PFNGLMULTIDRAWELEMENTSPROC) (GLenum mode, const GLsizei *count, GLenum type, const void *const*indices, GLsizei drawcount);
@@ -3342,8 +3344,6 @@
 
 #ifndef GL_ARB_imaging
 #define GL_ARB_imaging 1
-#define GL_BLEND_COLOR                    0x8005
-#define GL_BLEND_EQUATION                 0x8009
 #endif /* GL_ARB_imaging */
 
 #ifndef GL_ARB_indirect_parameters

diff --git a/api/GL/glext.h b/api/GL/glext.h
index 62a52e2..b61a145 100644
--- a/api/GL/glext.h
+++ b/api/GL/glext.h

@@ -51,7 +51,7 @@
 #define GLAPI extern
 #endif
 
-#define GL_GLEXT_VERSION 20170910
+#define GL_GLEXT_VERSION 20170924
 
 /* Generated C header for:
  * API: gl
@@ -353,15 +353,17 @@
 #define GL_TEXTURE_FILTER_CONTROL         0x8500
 #define GL_DEPTH_TEXTURE_MODE             0x884B
 #define GL_COMPARE_R_TO_TEXTURE           0x884E
-#define GL_FUNC_ADD                       0x8006
-#define GL_FUNC_SUBTRACT                  0x800A
-#define GL_FUNC_REVERSE_SUBTRACT          0x800B
-#define GL_MIN                            0x8007
-#define GL_MAX                            0x8008
+#define GL_BLEND_COLOR                    0x8005
+#define GL_BLEND_EQUATION                 0x8009
 #define GL_CONSTANT_COLOR                 0x8001
 #define GL_ONE_MINUS_CONSTANT_COLOR       0x8002
 #define GL_CONSTANT_ALPHA                 0x8003
 #define GL_ONE_MINUS_CONSTANT_ALPHA       0x8004
+#define GL_FUNC_ADD                       0x8006
+#define GL_FUNC_REVERSE_SUBTRACT          0x800B
+#define GL_FUNC_SUBTRACT                  0x800A
+#define GL_MIN                            0x8007
+#define GL_MAX                            0x8008
 typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
 typedef void (APIENTRYP PFNGLMULTIDRAWARRAYSPROC) (GLenum mode, const GLint *first, const GLsizei *count, GLsizei drawcount);
 typedef void (APIENTRYP PFNGLMULTIDRAWELEMENTSPROC) (GLenum mode, const GLsizei *count, GLenum type, const void *const*indices, GLsizei drawcount);
@@ -3504,8 +3506,6 @@
 
 #ifndef GL_ARB_imaging
 #define GL_ARB_imaging 1
-#define GL_BLEND_COLOR                    0x8005
-#define GL_BLEND_EQUATION                 0x8009
 #define GL_CONVOLUTION_1D                 0x8010
 #define GL_CONVOLUTION_2D                 0x8011
 #define GL_SEPARABLE_2D                   0x8012

diff --git a/xml/gl.xml b/xml/gl.xml
index b9aaa22..1811916 100644
--- a/xml/gl.xml
+++ b/xml/gl.xml

@@ -33191,15 +33191,17 @@
             <command name="glWindowPos3sv"/>
         </require>
         <require comment="Promoted from ARB_imaging subset to core">
-            <enum name="GL_FUNC_ADD"/>
-            <enum name="GL_FUNC_SUBTRACT"/>
-            <enum name="GL_FUNC_REVERSE_SUBTRACT"/>
-            <enum name="GL_MIN"/>
-            <enum name="GL_MAX"/>
+            <enum name="GL_BLEND_COLOR"/>
+            <enum name="GL_BLEND_EQUATION"/>
             <enum name="GL_CONSTANT_COLOR"/>
             <enum name="GL_ONE_MINUS_CONSTANT_COLOR"/>
             <enum name="GL_CONSTANT_ALPHA"/>
             <enum name="GL_ONE_MINUS_CONSTANT_ALPHA"/>
+            <enum name="GL_FUNC_ADD"/>
+            <enum name="GL_FUNC_REVERSE_SUBTRACT"/>
+            <enum name="GL_FUNC_SUBTRACT"/>
+            <enum name="GL_MIN"/>
+            <enum name="GL_MAX"/>
             <command name="glBlendColor"/>
             <command name="glBlendEquation"/>
         </require>
@@ -40048,17 +40050,17 @@
         </extension>
         <extension name="GL_ARB_imaging" supported="gl|glcore" comment="Now treating ARB_imaging as an extension, not a GL API version">
             <require>
+                <enum name="GL_BLEND_COLOR"/>
+                <enum name="GL_BLEND_EQUATION"/>
                 <enum name="GL_CONSTANT_COLOR"/>
                 <enum name="GL_ONE_MINUS_CONSTANT_COLOR"/>
                 <enum name="GL_CONSTANT_ALPHA"/>
                 <enum name="GL_ONE_MINUS_CONSTANT_ALPHA"/>
-                <enum name="GL_BLEND_COLOR"/>
                 <enum name="GL_FUNC_ADD"/>
+                <enum name="GL_FUNC_REVERSE_SUBTRACT"/>
+                <enum name="GL_FUNC_SUBTRACT"/>
                 <enum name="GL_MIN"/>
                 <enum name="GL_MAX"/>
-                <enum name="GL_BLEND_EQUATION"/>
-                <enum name="GL_FUNC_SUBTRACT"/>
-                <enum name="GL_FUNC_REVERSE_SUBTRACT"/>
                 <command name="glBlendColor"/>
                 <command name="glBlendEquation"/>
             </require>